Specifications

Sun Services

Java™ Programming Language

Module 6, slide 17 of 43

Virtual Method Invocation

• Virtual method invocation is performed as follows:

Employee e = new Manager();

e.getDetails();

• Compile-time type and runtime type invocations have

the following characteristics:

• The method name must be a member of the declared

variable type; in this case Employee has a method

called getDetails.

• The method implementation used is based on the

runtime object’s type; in this case the Manager class

has an implementation of the getDetails method.